<SEC-DOCUMENT>0001444157-24-000036.txt : 20241223
<SEC-HEADER>0001444157-24-000036.hdr.sgml : 20241223
<ACCEPTANCE-DATETIME>20241223155722
ACCESSION NUMBER:		0001444157-24-000036
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20241220
FILED AS OF DATE:		20241223
DATE AS OF CHANGE:		20241223

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Rothenstein David M
		CENTRAL INDEX KEY:			0001444157
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36250
		FILM NUMBER:		241573473

	MAIL ADDRESS:	
		STREET 1:		7035 RIDGE ROAD
		CITY:			HANOVER
		STATE:			MD
		ZIP:			21076

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CIENA CORP
		CENTRAL INDEX KEY:			0000936395
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		ORGANIZATION NAME:           	04 Manufacturing
		IRS NUMBER:				232725311
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1102

	BUSINESS ADDRESS:	
		STREET 1:		7035 RIDGE ROAD
		CITY:			HANOVER
		STATE:			MD
		ZIP:			21076
		BUSINESS PHONE:		4108658500

	MAIL ADDRESS:	
		STREET 1:		7035 RIDGE ROAD
		CITY:			HANOVER
		STATE:			MD
		ZIP:			21076
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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            <rptOwnerName>Rothenstein David M</rptOwnerName>
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            <rptOwnerStreet1>C/O CIENA CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>7035 RIDGE RD.</rptOwnerStreet2>
            <rptOwnerCity>HANOVER</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>21076-1426</rptOwnerZipCode>
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    <footnotes>
        <footnote id="F1">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/16/2020. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 12/18/2020.</footnote>
        <footnote id="F2">Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).</footnote>
        <footnote id="F3">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/13/2022. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 12/15/2022.</footnote>
        <footnote id="F4">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/12/2023. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 12/14/2023.</footnote>
        <footnote id="F5">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/14/2021. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 12/16/2021.</footnote>
        <footnote id="F6">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a market stock unit (MSU) award agreement dated 12/14/2021.  The earning of the MSU was previously reported on Table I of the reporting person's Form 4 filed on 12/19/2024.</footnote>
        <footnote id="F7">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a performance stock unit (PSU) award agreement dated 12/13/2022. The earning of the PSU was previously reported on Table I of the reporting person's Form 4 filed on 12/14/2023.</footnote>
        <footnote id="F8">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a performance stock unit (PSU) award agreement dated 12/12/2023. The earning of the PSU was previously reported on Table I of the reporting person's Form 4 filed on 12/19/2024.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Michelle Rankin For: David M Rothenstein</signatureName>
        <signatureDate>2024-12-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
